22       __palloc_(nullptr),  in strstreambuf()
23       __pfree_(nullptr)  in strstreambuf()
42     if (__pbeg == nullptr)  in __init()
54       __palloc_(nullptr),  in strstreambuf()
55       __pfree_(nullptr)  in strstreambuf()
63       __palloc_(nullptr),  in strstreambuf()
64       __pfree_(nullptr)  in strstreambuf()
66     __init(const_cast<char *>(__gnext), __n, nullptr);  in strstreambuf()
72       __palloc_(nullptr),  in strstreambuf()
73       __pfree_(nullptr)  in strstreambuf()
81       __palloc_(nullptr),  in strstreambuf()
82       __pfree_(nullptr)  in strstreambuf()
84     __init(const_cast<char *>(reinterpret_cast<const char*>(__gnext)), __n, nullptr);  in strstreambuf()
90       __palloc_(nullptr),  in strstreambuf()
91       __pfree_(nullptr)  in strstreambuf()
99       __palloc_(nullptr),  in strstreambuf()
100       __pfree_(nullptr)  in strstreambuf()
102     __init(const_cast<char *>(reinterpret_cast<const char*>(__gnext)), __n, nullptr);  in strstreambuf()
165         char* buf = nullptr;  in overflow()
170         if (buf == nullptr)  in overflow()
251     if (pos_in && gptr() == nullptr)  in seekoff()
253     if (pos_out && pptr() == nullptr)  in seekoff()
300         if (!((pos_in && gptr() == nullptr) || (pos_out && pptr() == nullptr)))  in seekpos()